package com.itheima.method;

public class change {
    public static void main(String[] args) {
        int num = 100;
        System.out.println("调用改变前"+ num);
        int a = change(num);
        System.out.println("调用改变后"+ a);
    }
    public static int  change(int abc){
        abc = 200;
        System.out.println(abc);
        return 200;
    }
}
